Desain Dan Implementasi Tuning Cascade PID Pada Heat Exchanger Tipe Shell-Tube

Ashiddiqi, Muhammad Roy (2021) Desain Dan Implementasi Tuning Cascade PID Pada Heat Exchanger Tipe Shell-Tube. Masters thesis, Institut Teknologi Sepuluh Nopember.

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02311850010012-Master_Thesis.pdf - Accepted Version
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[img] Text
02311850010012-Master_Thesis.pdf - Accepted Version
Restricted to Repository staff only until October 2023.

Download (4MB) | Request a copy

Abstract

Heat Exchanger (HE) merupakan unit operasi yang banyak digunakan dalam industri pengolahan minyak dan industri proses. Diantara berbagai HE, HE tipe Shell dan Tube (STHE) dikenal sebagai jenis yang paling umum digunakan di industri. Studi tentang desain STHE telah dilakukan dengan memperhatikan berbagai macam parameter dan aspek, meliputi parameter termal, fluida, mekanis dan kontrol, di mana kemudian karakteristik dinamis dari STHE menunjukkan time constant besar, dead time besar, dan karakteristik yang dipengaruhi perubahan disturbance pada manipulated variable inner loop. Dalam hal ini, kontrol PID bertingkat atau yang biasa disebut kontrol cascade, yaitu terdiri dari kontroler primer dan sekunder berturut-turut untuk mengendalikan suhu outlet shell dan laju aliran tube, dapat digunakan untuk mengatasi perubahan gangguan pada manipulated variable inner loop STHE. Oleh karena itu, pada penelitian ini dilakukan rancang bangun sistem kontrol pada simulator STHE kemudian dilakukan desain tuning kontrol cascade. Karakteristik heat exchanger pada simulator STHE diamati untuk mengetahui hubungan antara laju aliran terhadap perubahan temperatur. Optimisasi Algoritma Duelist (DA) digunakan untuk menentukan parameter tuning (Kp1, τi1, τd1, Kp2, τi2, τd2) pada kontroler primer dan sekunder. Fungsi obyektif pada metode tuning DA yaitu meminimalkan Integral Absolute Error (IAE). Hasil penelitian ini menunjukkan bahwa metode tuning DA pada simulasi kontrol cascade mampu mencapai IAE minimum jika dibandingkan dengan metode tuning Lee, Alfaro, Visioli dan Jeng. Implementasi metode tuning DA pada simulator STHE menunjukkan performa control yang stabil dan mampu mengatasi perubahan setpoint dan perubahan disturbance. ===================================================================================================== Heat Exchanger (HE) is an operating unit that is widely used in the process and oil processing industries. Among various HEs, Shell and Tube HE (STHE) is considered the most intensively used in industries. The study of STHE design has been carried out by considering various parameters and aspects, including thermal, fluid, mechanical and control parameters, where the dynamic characteristics of STHE show a large time constant, a large dead time, and is affected by the disturbance changes in the manipulated variable of inner loop. In this case, multilevel Proportional, Integral and Derivative (PID) control or commonly called cascade control, which consists of the primary and the secondary controller controlling the shell outlet temperature and tube flow rate, respectively, can be employed to overcome the disturbance changes in the manipulated variable of STHE’s inner loop. Therefore, in this study a control system is developed for a home built STHE simulator and a design of cascade control tuning is proposed. The heat exchanger characteristics in the STHE simulator were observed to determine the relationship between flow rate and temperature changes. The Duelist Optimization Algorithm (DA) was used to determine the tuning parameters (Kp1, τi1, τd1, Kp2, τi2, τd2) on the primary and secondary controllers. The DA objective function was to minimize Integral Absolute Error (IAE). The results indicate that the DA tuning method on the STHE cascade control system is capable of achieving the minimum IAE as compared to other tuning methods reported in literature, i.e. Lee’s, Alfaro’s, Visioli’s, and Jeng’s tuning algorithm. The implementation of the DA tuning on the STHE simulator leads to a stable control performance and the cascade control system is able to follow set point and disturbance change.

Item Type: Thesis (Masters)
Uncontrolled Keywords: Heat exchanger, cascade control tuning, Duelist Algorithm, tuning kontrol cascade, Algorithma Duelist (DA)
Subjects: T Technology > TJ Mechanical engineering and machinery > TJ213 Automatic control.
T Technology > TJ Mechanical engineering and machinery > TJ263 Heat exchangers
T Technology > TJ Mechanical engineering and machinery > TJ223 PID controllers
Divisions: Faculty of Industrial Technology > Physics Engineering > 30101-(S2) Master Thesis
Depositing User: Muhammad Roy Ashiddiqi
Date Deposited: 23 Jun 2021 09:13
Last Modified: 23 Jun 2021 09:13
URI: https://repository.its.ac.id/id/eprint/84250

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